X402station

Name: X402station
Author: sF1nX

by sF1nXversion 1.0.11i★ –iRuns on your computer

Registry nameio.github.sF1nX/x402station

Install

Overview

Description from the maker (original English)

x402station.io: independent risk-signal layer for x402 endpoints before agents pay.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Other
You need to fill in: AGENT_PRIVATE_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: AGENT_PRIVATE_KEY, X402STATION_BASE_URL

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "x402station": {
      "command": "npx",
      "args": [
        "-y",
        "x402station-mcp"
      ],
      "env": {
        "AGENT_PRIVATE_KEY": "your-value",
        "X402STATION_BASE_URL": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add x402station --env AGENT_PRIVATE_KEY=your-value --env X402STATION_BASE_URL=your-value -- npx -y x402station-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "x402station": {
      "command": "npx",
      "args": [
        "-y",
        "x402station-mcp"
      ],
      "env": {
        "AGENT_PRIVATE_KEY": "your-value",
        "X402STATION_BASE_URL": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "x402station": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "x402station-mcp"
      ],
      "env": {
        "AGENT_PRIVATE_KEY": "your-value",
        "X402STATION_BASE_URL": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

AGENT_PRIVATE_KEY secret required env
0x-prefixed 64-hex-char private key. Account must hold Base mainnet USDC. Required for any paid tool call.
X402STATION_BASE_URL env
Optional override. Only https://x402station.io or http(s)://localhost are accepted to prevent payload hijacking; any other value makes the adapter refuse to start.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 8, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account sF1nX, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 18436 servers in this category
Published to the registry more recently than 9% of the other 18436 servers in this category
Basic checks equal to or better than 100% of the other 18436 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is X402station safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: AGENT_PRIVATE_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.11) reached the registry 5 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, MONS

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

x402station-mcp

MCP adapter for [x402station.io](https://x402station.io), the independent risk-signal layer for x402 agentic commerce. Exposes Preflight by x402station.io plus Forensics, Catalog Decoys, Alternatives, Credits, Watch, and Whats New. Any agent speaking the Model Context Protocol gets endpoint evidence before signing PAYMENT-SIGNATURE — decoy, zombie, price-trap, never-paid, latency, signature/settlement checks — before paying.

x402station.io independently probes every endpoint listed on agentic.market every 10 minutes and merges probe history with CDP settlement data. Policy engines decide and enforce; x402station.io measures and reports. We do not route, take custody, or endorse.

Install

# Claude Code / Cursor / Windsurf / Continue — works anywhere with MCP

npm install -g x402station-mcp

or use npx in the config, no global install needed:

Configure

The adapter charges real USDC per paid call through x402 itself. You need a wallet private key that holds Base mainnet USDC.

Claude Code

Add to ~/.claude/claude_desktop_config.json (or wherever your MCP servers live):

"mcpServers": { "x402station": { "command": "npx", "args": ["-y", "x402station-mcp"], "env": { "AGENT_PRIVATE_KEY": "0xYOUR_PRIVATE_KEY_HERE" } } } }

Cursor / Windsurf / Continue

Same shape — every MCP host understands command / args / env. See your tool's MCP docs.

Environment

Variable	Required	Default	Purpose
`AGENT_PRIVATE_KEY`	yes for any paid tool call	—	0x-prefixed 64-hex-char private key. Account must hold Base mainnet USDC.
`X402STATION_BASE_URL`	no	`https://x402station.io`	Override for dev / testing.

Tools

`preflight(url)` — $0.001 USDC

Ask whether it's safe to pay this x402 URL. Returns:

"ok": true, "warnings": [], "metadata": { "service": "...", "price_usdc": "0.01", "uptime_1h_pct": 100, "avg_latency_ms": 412 } }

ok is true only when no critical warning fires. Warnings include unknown_endpoint, no_history, dead, zombie, decoy_price_extreme, never_paid_zombie, proxy_markup, wildcard_402, spa_fallback, suspicious_high_price, slow, and new_provider.

`forensics(url)` — $0.001 USDC

Deep 7-day report. Superset of preflight. Returns hourly uptime, latency p50/p90/p99, status-code distribution, concentration-group stats, decoy probability. Extra warnings: dead_7d, mostly_dead, slow_p99, price_outlier_high, high_concentration.

`catalog_decoys()` — $0.005 USDC

Full blacklist. Returns every active endpoint currently flagged critical, plus per-reason counts. Pull periodically and cache locally — cheaper than preflighting every URL.

Typical agent flow

agent wants data from some_endpoint.com

│ ├─ preflight("https://some_endpoint.com/data") ← $0.001 │ ok: false, warnings: ["decoy_price_extreme"] │ └─ skip; try the next candidate

For bulk discovery, do catalog_decoys() once per day and treat the result as a set-difference against any URLs you're about to hit.

Composes with

x402station checks whether the endpoint is safe (decoy / zombie / price-trap / never-paid) before an agent pays. It pairs naturally with a payload safety check — screening the payment metadata for PII before signing:

agent intent: pay some_endpoint.com

├─ x402station preflight(url) ← is the ENDPOINT safe? ├─ presidio-x402 screen_payment_metadata() ← is the PAYLOAD safe? └─ pay()

presidio-hardened-x402-mcp screens payment metadata for PII before signing. The two servers are developed independently, on purpose — keeping the signals uncorrelated is the point. This is a composition pointer, not an endorsement; see their repo for the screening tool's behaviour and limits.

Contact

General + commercial:
Bug reports: https://github.com/sF1nX/x402station-mcp/issues
Security disclosures (RFC 9116): https://x402station.io/.well-known/security.txt

License

MIT

X402station

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

MONS

README from the maker

x402station-mcp

Install

or use npx in the config, no global install needed:

Configure

Claude Code

Cursor / Windsurf / Continue

Environment

Tools

preflight(url) — $0.001 USDC

forensics(url) — $0.001 USDC

catalog_decoys() — $0.005 USDC

Typical agent flow

Composes with

Links

Contact

License

`preflight(url)` — $0.001 USDC

`forensics(url)` — $0.001 USDC

`catalog_decoys()` — $0.005 USDC